Class Mammalia Linnaeus, 1758 - mammals
Order Rodentia Bowdich, 1821 - rodents
Suborder Sciurognathi (Tullberg, 1899)
see Suborder Sciuromorpha Brandt, 1855
Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
Subfamily Arvicolinae Gray, 1821 - voles
Genus Dicrostonyx Gloger, 1841 - collared lemmings
01 Dicrostonyx exsul G.M. Allen, 1919 - St. Lawrence Island collared lemming
02 Dicrostonyx groenlandicus (Traill, 1823) - American arctic lemming
03 Dicrostonyx hudsonius (Pallas, 1778) - Labrador collared lemming
04 Dicrostonyx kilangmiutak Anderson & Rand, 1945 - Kilangmiutak collared lemming
05 Dicrostonyx nelsoni Merriam, 1900 - Nelson's collared lemming
06 Dicrostonyx nunatakensis Youngman, 1967 - Ogilvie collared lemming
07 Dicrostonyx richardsoni Merriam, 1900 - Richardson's collared lemming
08 Dicrostonyx rubricatus (Richardson, 1889) - Bering collared lemming
09 Dicrostonyx torquatus (Pallas, 1779) - Siberian arctic lemming
10 Dicrostonyx unalascensis Merriam, 1900 - Aleutian Island collared lemming
11 Dicrostonyx vinogradovi Ognev, 1948 - Wrangel lemming